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At a glance
- Type
- Continuous monitor, plug-in, display only, pulsed ionization chamber
- How it measures
- Pulsed ionization chamber
- First reading
- Within 10 minutes
- Reading updates
- Every 10 minutes; 1-hour, 1-day, 1-week and 1-month averages on the display
- Display and app
- Built-in display, no app
- Power
- Plug-in: 5V, 1A DC adapter
- Units
- pCi/L and Bq/m³ published
- Price
- Not shown. We print a price only from Amazon's live product data, with the time it was checked, and that feed is not connected yet.
What it is and how it works
The EcoBlu uses the same kind of radon sensor as Ecosense's other home monitors, a pulsed ionization chamber, and measures every 10 minutes. Ecosense rates its counting sensitivity at 18 counts per hour per pCi/L, lower than the 30 it gives for the RadonEye and EcoQube, and describes that figure as exceeding the industry's minimum standard.
Everything happens on the device. The LED display has five monitoring modes, which Ecosense labels R, D, W, M and L: a real-time reading updated every 10 minutes, a 24-hour average, a 7-day average, a 30-day average, and a long-term mode for yearly trends. The brochure describes the results as 1-hour, 1-day, 1-week and 1-month moving averages.
Ecosense publishes the same measurement range as its other home monitors, 0.2 to 99.9 pCi/L or 7 to 3,700 Bq/m³, and an operating range of 32 to 104°F with relative humidity under 80%. An integrated audio alarm can be set to a radon level of your choosing, and a tilted stand holds the display at an angle for reading.
Because there is no app, there is also no exported history: what you see is what the display's averages show. Ecosense's pitch for the EcoBlu is that it needs no smartphone, no Wi-Fi and no battery, so it suits someone who wants a number on the shelf rather than graphs on a phone.
Ecosense's case for a continuous monitor over a single kit is that radon fluctuates from day to day and season to season, so a one-time test with a single result, such as a traditional charcoal kit, can miss changes at night or on rainy days. That is the manufacturer's argument for its own product category. The EPA's answer to the same variation is a follow-up test, long-term where possible, before deciding to fix a home.
Independent evidence
Independent evidence
- C-NRPP 2024/25
- Not included in C-NRPP's 2024/25 evaluation
The Canadian National Radon Proficiency Program's 2024/25 comparison of consumer monitors did not include Ecosense EcoBlu. That is a fact about which devices took part, not a finding about this one: no result from that program exists for it either way.
- Earlier round
C-NRPP's 2023 report listed “Ecosense EcoBlue” as having passed its performance test.
- Recalls
- No Health Canada recall or advisory names this device.
- Peer-reviewed studies
- We found no peer-reviewed comparison that names this model.
- Notes
- C-NRPP's 2023 report spells the name "EcoBlue".
C-NRPP is the Canadian National Radon Proficiency Program. Its 2024/25 results were published in May 2025.
How C-NRPP says to use any consumer monitor
- Leave it in place for at least three months, ideally through the heating season, when indoor radon tends to be highest.
- Put it in a room someone uses for at least four hours a day.
- Decide about fixing your home from the long-term average, not a single day or week.
- If you can only run a monitor for less than 91 days, follow up with a long-term test.
What the manufacturer says
- Ecosense states a radon accuracy and precision of under ±14% at 10 pCi/L after 10 hours, with a minimum uncertainty of ±0.7 pCi/L.
- C-NRPP's 2023 report lists Ecosense's stated accuracy for the EcoBlue as +/-14% at 370 Bq/m³.
- Ecosense states the first reading arrives in 10 minutes, with reliable results in an hour.
- Ecosense states coverage of up to 1,000 square feet.
These are Ecosense's own statements, attributed to it. They are not our findings, and we have not tested this product ourselves.
Who it fits
Good fit if
- You want a number on a screen without any phone, app or account.
- You have an outlet where it can stay plugged in for months.
- You want daily, weekly, monthly and long-term averages without setting anything up.
- You want an alarm you can set to your own radon level.
Look elsewhere if
- You want a device that took part in C-NRPP's 2024/25 evaluation.
- You want to keep or export a record of your readings; there is no app.
- You want to check readings while away from home.
- You need a result for a home sale; check what your state accepts before relying on any consumer monitor.
Setup and placement
Ecosense's setup is to unbox it, plug it in and let it monitor continuously. It runs from a 5V, 1A adapter and measures 2.83 by 2.83 by 2.44 inches.
Placement follows the EPA's guidance for any home test: the lowest lived-in level, a room used regularly but not the kitchen or bathroom, at least 20 inches above the floor, and away from drafts, high heat, high humidity and exterior walls. C-NRPP adds a room occupied for at least four hours a day, and at least three months of monitoring, ideally in the heating season.
Read the long-term mode, not the real-time one, when you are deciding what to do. Decide on mitigation from the long-term average, and keep in mind that each monitor averages its data differently, so the user guide is the place to check how a given mode is calculated.
For where any radon test or monitor should sit in a home, see where to place a radon test.
What is in the box, and what it costs to run
The box holds the EcoBlu, a user guide, a power cable and a power adapter, with email support and a 12-month limited warranty. Registering within 30 days adds a one-year extension, for two years in total. The page offers it in white or blue.
No lab fee, no subscription and no batteries. The only ongoing need is power. Ecosense sells a replacement USB cable and power adapter separately if either is lost.
Compared with similar products
This product first, then its neighbors A to Z. Order is not a recommendation.
Ecosense EcoBlu (this page)
- Type
- Continuous monitor
- How it measures
- Pulsed ionization chamber
- Power
- Plug-in
- C-NRPP 2024/25
- Not included
- Type
- Continuous monitor
- How it measures
- Alpha spectrometry, passive diffusion chamber
- Power
- Battery
- C-NRPP 2024/25
- Not included
Battery-powered with an LCD screen of averages and an optional Bluetooth app; also not part of C-NRPP's 2024/25 evaluation.
- Type
- Continuous monitor
- How it measures
- Pulsed ionization chamber
- Power
- Plug-in
- C-NRPP 2024/25
- Approved
Same maker; adds Wi-Fi and an app but shows a colored light instead of numbers; approved in C-NRPP's 2024/25 evaluation.
- Type
- Continuous monitor
- How it measures
- Pulsed ionization chamber
- Power
- Plug-in
- C-NRPP 2024/25
- Approved
Same maker and sensor type with a higher stated sensitivity of 30 counts per hour per pCi/L, a Bluetooth app, and approval in C-NRPP's 2024/25 evaluation.
| Product | Type | How it measures | Power | C-NRPP 2024/25 | The difference that matters |
|---|---|---|---|---|---|
| Ecosense EcoBlu (this page) | Continuous monitor | Pulsed ionization chamber | Plug-in | Not included | The product this page covers. |
| Airthings Corentium Home 2 | Continuous monitor | Alpha spectrometry, passive diffusion chamber | Battery | Not included | Battery-powered with an LCD screen of averages and an optional Bluetooth app; also not part of C-NRPP's 2024/25 evaluation. |
| Ecosense EcoQube | Continuous monitor | Pulsed ionization chamber | Plug-in | Approved | Same maker; adds Wi-Fi and an app but shows a colored light instead of numbers; approved in C-NRPP's 2024/25 evaluation. |
| Ecosense RadonEye RD200 | Continuous monitor | Pulsed ionization chamber | Plug-in | Approved | Same maker and sensor type with a higher stated sensitivity of 30 counts per hour per pCi/L, a Bluetooth app, and approval in C-NRPP's 2024/25 evaluation. |
Every continuous monitor we cover is listed on continuous monitors.
Questions people ask
Is the EcoBlu C-NRPP approved?
It was not included in C-NRPP's 2024/25 consumer monitor evaluation, so there is no result for it from that round. C-NRPP's 2023 report listed the Ecosense EcoBlue as having passed its performance test.
Does the EcoBlu need an app or Wi-Fi?
No. Ecosense describes it as plug-and-play with no smartphone, no Wi-Fi, no Bluetooth and no battery. Every reading and average is on the LED display.
What do the R, D, W, M and L modes mean?
Ecosense defines them as real-time (updated every 10 minutes), daily (a 24-hour average), weekly (a 7-day average), monthly (a 30-day average) and long-term (yearly trends).
What does the alarm do?
Ecosense lists an integrated audio alarm with a visual LED, and its brochure says the alarm is configurable to a radon level you set. Choose the level with the EPA's guidance in mind: the EPA says to fix a home at 4 pCi/L or more and to consider fixing between 2 and 4 pCi/L, based on longer-term results rather than a single spike.
Can the long-term mode stand in for a long-term test?
For any consumer monitor, the guidance is to run it for at least three months, preferably in the heating season, and to decide from the long-term average. If you have less than 91 days of monitor data, it recommends following up with a long-term radon test.
How does it differ from the RadonEye?
Both are Ecosense plug-in monitors with a pulsed ionization chamber and the same published range. Ecosense rates the RadonEye's sensitivity at 30 counts per hour per pCi/L against 18 for the EcoBlu, and states under ±10% at 10 pCi/L for the RadonEye against under ±14% for the EcoBlu. The RadonEye adds a Bluetooth app; the EcoBlu shows its numbers on what Ecosense calls a full-size LED screen, with no app.
What to do next
- See every continuous monitor we coverListed by type, then A to Z, each with the same fields and its evidence.Go
- Place it where it countsThe lowest lived-in level, away from drafts, at least 20 inches up.Go
- Read your resultWhat a number in pCi/L means and what the EPA says to do next.Go
- Testing for a home sale?Find radon measurement professionals in our directory.Go